Our Plants

A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Z

More information »

Hazardia squarrosa v. squarrosa

(sawtooth goldenbush)

For a splash of color in late summer and fall, this goldenbush is a great choice, providing clusters of cheery, golden flowers at the height of the dry season, which supply food for butterflies. Birds enjoy the seeds which follow. Rounded leaves with sawtooth margins line the stems and emit a wonderfully sweet scent. This seed strain comes from a hot area in Big Sur and is remarkably compact and rounded, reaching about 3 ft. tall and wide. We’ve found it to be very adaptable, tolerant of clay soils and zero to occasional irrigation. Likes full sun but will accept a little shade. Plant with buckwheats, Salvias, and California fuchsias. Not usually available in Northern California nurseries.
Helenium autumnale  autumn sneezeweed
More information »

Helenium autumnale

(autumn sneezeweed)

This desirable autumn bloomer is known for its masses of bright yellow daisies up to three inches wide, perched atop stems two to three feet high. Lance-shaped leaves of light green create dense mats six inches high. Native to Northern California and much of North America where it grows in moist meadows. Will slowly increase to form small colonies. Plant in full to part sun and provide regular water. Attracts bees and butterflies. Deer resistant. Despite the common name, this plant is insect pollinated and isn't known to cause hay fever. It was originally used to make snuff, hence the name sneezeweed.  
Helenium bigelovii  Bigelow's sneezeweed
More information »

Helenium bigelovii

(Bigelow's sneezeweed)

Native to moist meadows of California and S. Oregon, this summer flowering perennial makes a lovely addition to the garden. The cheerful golden-yellow petals turn down slightly from the rounded dome-like center. The golden daisy-like blossoms are held above the rosette of smooth green leaves on 2 - 3 ft. tall stems and attract a wide variety of insects including bees and butterflies. Despite the common name this plant does not cause allergies. It was originally used for snuff, hence the name sneezeweed. Plant in full sun to light shade with regular water. The seed for this crop is from the Pitkin Marsh in Sonoma County.
Helenium bolanderi  coastal sneezeweed
More information »

Helenium bolanderi

(coastal sneezeweed)

Description coming soon!
Helenium puberulum  rosilla
More information »

Helenium puberulum


Summer brings clouds of yellow pom-poms which age to brown on this native member of the sunflower family. The round flower clusters sit atop rings of small, down-turned petals, held up on flat stems lined with lanceolate leaves. The flower stalks reach 3 to 5 ft. in height and can be cut down once blooming has finished. Plant in full sun to light shade. Rosilla grows naturally by creeks and seeps and enjoys regular moisture, but will tolerate some drier periods. Attracts a wide variety of insects including bees and butterflies. Goldfinches love the seed. Reseeds readily. 
Helianthella californica  California helianthella
More information »

Helianthella californica

(California helianthella)

Native perennial sunflower growing in chaparral and woodland communities throughout much of California. Forms clumps of dark green, lance shaped leaves under a foot tall.  Blooms April through June with small, golden-yellow sunflower heads which rise above foliage 18 inches to 2 ft. tall.  Plant in full sun to light shade where it will be quite drought tolerant once established. The flowers attract a wide array of pollinators and beneficial insects.
Helianthemum (Crocanthemum) scoparium  peak rushrose
More information »

Helianthemum (Crocanthemum) scoparium

(peak rushrose)

An interesting and little known member of the rockrose family, found in disturbed areas of chaparral, especially abundant after fires. Smooth, rush-like, green stems, lacking obvious leaves with age, grow 6 - 20 inches tall and wide. Summer brings an abundance of little, cheerful, bright-yellow blossoms. Perfect rock garden item or planted with other dryland species such as manzanita, California lilac or native sages. Plant in full sun with good drainage, where it will be very drought tolerant once established. Tolerant of serpentine soils too.
Helianthus annuus  common sunflower
More information »

Helianthus annuus

(common sunflower)

Native to much of North America, this is a wild California selection from the Central Valley just east of Lake Berryessa. A fast growing annual with coarse heart-shaped leaves and topped with an abundance of 3 inch flowers, with bright yellow petals and brown centers on branched stalks. An excellent habitat plant, providing nectar and pollen for a wide array of bees and butterflies as well as seed relished by birds. A highly variable species with a long history of uses and domestication. Plant in full sun where it is adaptable to soil types and watering regimes. Can manage in dryish conditions but best with moderate water, especially early in its growth.
Helianthus californicus  California sunflower
More information »

Helianthus californicus

(California sunflower)

This giant, perennial sunflower is native to riparian habitats in openings with decent light. Dormant in the winter, spring brings rapid growth, with narrow, bright green leaves on tall stalks rising 7 feet or more above a root system which spreads widely. Summer brings many small, golden-yellow sunflowers on the branch tips which are quite dramatic in full bloom. Flowers attract bees and butterflies and the seeds are relished by birds. Perfect for stabilizing soil where there is some summer water and plenty of space. Once established it can take it dryish, but will flower better with water. An excellent cut flower.
Heracleum lanatum  cow parsnip
More information »

Heracleum lanatum

(cow parsnip)

Big, bold, native perennial 3 - 8 ft. tall, is striking in mass or as a specimen. Forms a rosette of large lobed leaves followed by stout flower stems carrying large umbels of white flowers. Thrives in rich soils with some moisture. Full sun along coast, part shade inland. As a member of the carrot family (Apiaceae) the flowers are very effective at attracting beneficial insects. Larval food source for anise swallowtail butterfly.
Hesperocyparis forbesii  Tecate cypress
More information »

Hesperocyparis forbesii

(Tecate cypress)

Description coming soon!
Hesperocyparis macnabiana  MacNab cypress
More information »

Hesperocyparis macnabiana

(MacNab cypress)

MacNab Cypress is native to dry, open, slopes, usually on serpentine, in chaparral and woodlands of Northern California. Fast growing tree or large shrub, 15 – 40 ft. tall, often with multiple trunks and a spreading crown, growing wider than it is tall. The pleasantly pungent, grey-green, foliage smells like gin and is arranged on flattened branches, giving it a somewhat lacey appearance. The bark is rough and furrowed and the cones are spherical and persistent. Plant in full sun with good drainage and little to no summer water once established. Deer resistant.
Hesperocyparis pygmaea  pygmy cypress
More information »

Hesperocyparis pygmaea

(pygmy cypress)

Description coming soon!
Hesperocyparis sargentii  Sargent cypress
More information »

Hesperocyparis sargentii

(Sargent cypress)

This cypress makes its home in serpentine pygmy forests from Santa Barbara to Mendocino Counties. While often dwarfed in its native terrain, this species can grow quite happily off of serpentine and may reach up to 60 ft. tall. The small, dark-green, scale-like leaves form a bushy canopy against the gray-brown trunk. A good medium-sized tree for hotter inland areas, but will also tolerate coastal conditions. The sargent cypress can grow fairly rapidly, useful as a high privacy screen or wind break. Plant in full sun to light shade and water occasionally.  Will be very drought tolerant once established. Needs good drainage. Deer resistant.
Hesperoyucca whipplei  Our Lord's candle
More information »

Hesperoyucca whipplei

(Our Lord's candle)

Bold and dramatic architectural accent plant native to southern California coast and mountains south to Baja. Forms a dense rosette of rigid silver-blue blades, 2 foot tall by 3 - 4 foot wide. Each blade has a VERY SHARP tip and careful thought should be given to its placement to avoid injury. Plants can take 3 to 15 years to bloom with impressive stalks rising 6 foot or more above the rosette with drooping, creamy white, bell shaped, fragrant flowers. The flowering rosette dies after blooming often being replaced by vegetative offsets. Best with good drainage in full sun to light shade. No water once established. Deer resistant
Heteromeles arbutifolia  toyon
More information »

Heteromeles arbutifolia


Toyon is a handsome native evergreen shrub 6 - 10 ft. tall and wide (or more). Sun to part shade, drought tolerant. Clusters of lacy white flowers bloom in summer and areattractive to pollinators. Spectacular bundles of red berries are relished by birds and are a great winter decoration. Valuable as a specimen, screen, hedge or bank plant. Birds attracted to the fruit include the following species: Cedar waxwing, California towhee, spotted towhee, Western bluebird, robins, mockingbirds, bandtailed pigeon, waxwing and quail.
Heteromeles arbutifolia 'Davis Gold' gold fruited toyon
More information »

Heteromeles arbutifolia 'Davis Gold'

(gold fruited toyon)

An interesting cultivar of the native toyon which bears bright golden yellow berries rather than the more common red-colored fruits. A handsome evergreen shrub 8 - 12 ft. tall and wide (or more). Sun to part shade, drought tolerant. Clusters of lacy white flowers bloom in summer and are attractive to pollinators. The showy clusters of orange-yellow berries are relished by birds and are great winter decoration. Valuable as a specimen, screen, hedge or bank plant. This selection is considered more disease resistant than most toyon.
Heterotheca sessiliflora ssp. bolanderi 'San Bruno Mountain' hairy false goldenaster
More information »

Heterotheca sessiliflora ssp. bolanderi 'San Bruno Mountain'

(hairy false goldenaster)

Versatile and tough native perennial well suited for the rock garden front of the border or container plantings. Evergreen foliage forms low mats topped with bright yellow daisies in summer - fall. For sunny sites and dryish conditions. Flowers are appealing to bees and butterflies.  
Heuchera  'Canyon Duet' coral bells
More information »

Heuchera 'Canyon Duet'

(coral bells)

A Santa Barbara Botanic Garden selection, part of their Quartet Series of hybrids. This charming, diminutive coral bells forms low, sturdy clumps of small rounded leaves slowly spreading to about 10-12 inches wide. Bi-colored flowers of dark pink and white rise 12 to 18 inches above the dense foliage in spring and early summer. Heuchera's require good light to bloom well but resent full sun, especially inland. Moderate to occasional water. Excellent small scale perennial for mixed border, edging or rock garden. Good container subject too.
Heuchera  'Lillian's Pink' coral bells
More information »

Heuchera 'Lillian's Pink'

(coral bells)

An exceptional hybrid forming tidy mounds of foliage 12 - 18 inches wide. Topped with slender stems of shell pink flowers for a long period in the spring. Best with shade from the hottest sun and moderate summer water. Lovely in drifts. This species attracts hummingbirds.
Heuchera  'Old La Rochette' coral bells
More information »

Heuchera 'Old La Rochette'

(coral bells)

Here is a wonderful, often hard to find Heuchera hybrid. Grows into robust clumps of rounded leaves to around 1 ft. tall and 1 - 2 ft. wide. 2 ft. tall flower stalks carry hundreds of soft pink blossoms in the spring, and often intermittently through the summer. Sturdy perennial for part shade and a little summer water. This species attracts hummingbirds.
Heuchera  'Rosada' coral bells
More information »

Heuchera 'Rosada'

(coral bells)

Listed as one of U.C. Davis Arboretum’s “All Stars”, this heuchera hybrid is tough and dependable. Forms an attractive mound of evergreen foliage 10 - 12 inches tall. A  long display of tall flower stems covered with creamy-pink dainty bells begin in the spring and often continue into the summer. Best with part shade and moderate to occasional summer water. Attracts hummingbirds.
Heuchera  'Santa Ana Cardinal' coral bells
More information »

Heuchera 'Santa Ana Cardinal'

(coral bells)

An outstanding hybrid that is vigorous and free flowering. Compact clumps of foliage topped with 2 ft. tall flowering stems with vibrant rose-red blossoms over a long period. Plant in cool full sun to light shade with moderate to occassional summer water once established. This species attracts hummingbirds.
Heuchera  'Wendy' coral bells
More information »

Heuchera 'Wendy'

(coral bells)

One of the prettiest hybrids from Rancho Santa Ana Botanic Gardens. Large light green leaves, branched stems about 2’ tall carry hundreds of light pink, rather plump, blossoms in spring. Sun near the coast, part shade inland. Reasonably well drained soil and moderate to little water when established. This species attracts hummingbirds.
Heuchera cylindrica  roundleaf alumroot
More information »

Heuchera cylindrica

(roundleaf alumroot)

Native to the northern mountains of California, the roundleaf alumroot is distinctive for its dense clusters of white to cream-yellow flowers held on vertical stems reaching 1 to 2 ft tall. Round leaves grow in tight mounds up to 8 inches high and 2 ft wide. Combine with pink Heucheras, Iris and small ferns for an attractive woodland display. Needs part shade and decent drainage. Attracts hummingbirds. Drought tolerant.
Heuchera glabra  smooth alumroot
More information »

Heuchera glabra

(smooth alumroot)

Description coming soon!

More information »

Heuchera hirsutissima

(shaggy haired alumroot)

This miniature alumroot is the perfect addition to the lightly shaded rock garden or along the edge of a path. Pinkish-white, dainty flowers sit atop short stems only about 4 inches tall in spring and summer. The little 2 inch mounds of dark green leaves slowly spread to form tiny drifts. Provide good drainage and moderate irrigation. An excellent plant for a rock crevice or container where it can be combined with Idaho fescue, Erigeron 'Olga' or leather fern. This species comes from the San Jacinto and Santa Rosa mountains of southern California. 
Heuchera maxima  Island alum root
More information »

Heuchera maxima

(Island alum root)

Native to the Channel Islands, this is one of the most adaptable and vigorous of the alum roots, forming broad evergreen mounds of bright green folilage 1 - 1 1/2 ft. high. Maroon flower stems are 3 ft. high topped with pink blushed creamy flowers that have a slight green haze. Best with part shade and a little summer water, but will tolerate full sun close to the coast. Good for use under oaks. This species attracts hummingbirds.
Heuchera micrantha  alum root
More information »

Heuchera micrantha

(alum root)

This is our common alum root which is usually seen on shady cliffs and roadbanks adjacent to forests. Easy to grow in garden situations. Forms low mounds of foliage topped with dainty white flowers on long stems. Likes moisture, but tolerates considerable drought and takes deeper shade than most Heuchera species. This species attracts hummingbirds.
Heuchera micrantha 'Martha Roderick' alum root
More information »

Heuchera micrantha 'Martha Roderick'

(alum root)

Here’s a pink flowered form of the normally white flowered native alum root. Foliage forms handsome clumps topped with slender stalks 1 - 1 1/2 ft. tall of tiny pink flowers. Excellent in woodland setting for border, slope or rock garden. Drought tolerant but best with a little water. This species attracts hummingbirds.

More information »

Heuchera pilosissima

(seaside alum root)

Native to the coast from Mendocino to Santa Barbara Counties, this perennial forms compact, evergreen clumps of light-green scalloped leaves. Stocky flower stems 12 – 16 inches long carry small white-pink flowers in early summer. Perfect in coastal areas where it can grow in sun to light shade and will be drought tolerant once established. Must have part shade and some summer water inland. Plant in mass for a nice ground cover in a woodland setting or in mixed plantings with shrubs and ferns. Attracts hummingbirds.    
Hibiscus lasiocarpos var. occidentalis (californicus)  woolly rose mallow
More information »

Hibiscus lasiocarpos var. occidentalis (californicus)

(woolly rose mallow)

A rare species from wetland habitats in the Delta of the Central Valley, which are seriously threatened due to habitat disturbance and development. A large perennial growing 3 - 6 ft. tall with heart-shaped fuzzy leaves on sturdy stems and large showy white flowers with deep pink centers in the summer. Tropical looking and water loving this interesting herbaceous perennial grows best with summer heat. Plant in full sun to light shade with regular water. Tolerates heavy soils and seasonal flooding. Nice container specimen where its needs may be easier to meet.  
Hierochloe (Anthoxanthum) occidentalis  vanilla grass
More information »

Hierochloe (Anthoxanthum) occidentalis

(vanilla grass)

Here is an interesting and elegant grass native to coniferous forests. Broad, bright green, sweetly scented blades grow a foot or more tall. Flowering culms rise another 6 inches or so above the foliage with tight panicles of spikelets. The leaves offer a sweet, vanilla fragrance when dried. Excellent for woodland gardens, compatible with many redwood forest plants. Best with some summer water, but is drought tolerant near the coast. A larval host for the Western branded skipper butterfly. Deer resistant.
Hierochloe (Anthoxanthum) odorata  sweet grass
More information »

Hierochloe (Anthoxanthum) odorata

(sweet grass)

Invite good spirits into your home and garden with this interesting, fragrant grass. Sweet grass is an aromatic, native perennial, with an extensive range in the United States, Canada and Eurasia. Growing in wetlands, prairies and meadows, it prefers rich, moist, soils and at least half day of sun. The grass flowers sit just above the foliage where they can dance with the wind. This cool season grass is sacred to indigenous people, where it is used in herbal medicine, a kind of tobacco, basket making, and burned as a smudge. Growing 1 - 2 ft. tall and spreading widely by sturdy rhizomes that can be difficult to eliminate once well established. Winter dormant in cold areas. Deer resistant.
Hoita macrostachya  leather root
More information »

Hoita macrostachya

(leather root)

Plant description coming soon.
Holodiscus discolor  cream bush, ocean spray
More information »

Holodiscus discolor

(cream bush, ocean spray)

An elegant, deciduous, native shrub growing 5 - 6 ft. tall or more, depending on the site, and at least as wide. Beautiful, cascading clusters of creamy white flowers hang from branch tips in early summer. The fragrant flowers attract pollinators and a number of butterflies use it as a host plant. Best with light shade. Drought tolerant, but will accept some moisture.
Holodiscus dumosus var. cedrorus  Cedars cream bush
More information »

Holodiscus dumosus var. cedrorus

( Cedars cream bush)

A recently described endemic shrub discovered by the extraordinary plantsmen Roger Raiche, growing on serpentine soils of the Cedars in northwestern Sonoma County. An open deciduous shrub, approximately 3 ft. x 3 ft. with wiry ruby-red stems and elegant small, shiny, dark green to bronze leaves. Early summer brings erect panicles of cream colored flowers that are suffused in light wine-red or pink coloration. Seems to tolerate a wide range of conditions from full sun to deep shade. Once established has proven durable and drought tolerant. This lovely small creambush is perfect for those who want something completely new and different. It does well in containers and should be interesting to experiment with in different applications and settings.    
Hordeum brachyantherum  meadow barley
More information »

Hordeum brachyantherum

(meadow barley)

Native to a wide range of vernally wet plant communities throughout California and beyond. Once abundant throughout the Santa Rosa Valley where it could be found in grasslands, seasonal flood plains, moist meadow and open riparian areas.  Forms perennial clumps with blades 6-10 inches tall, flower stalks to 30 inches are topped with narrow spikes of purple tinged upward facing bristles, looking like a small version of a classic cereal grain seedhead. Tolerant of heavy clay, alkaline or saline soils.  Doesn't make a big impact standing alone,  best used in mass or in a blend of other native meadow grasses where its slender flower heads make a pleasing effect.  Plant in full sun with vernally wet soils.  Deer resistant.
A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Z